Steam Client Beta (Sep 9): Big Art Mode and Big Picture upgrades
Valve's September 9, 2026 Steam Client Beta adds Big Art Mode, a Big Picture screensaver, and related TV/Deck-friendly home screen options. These features are on the beta channel unless Valve later promotes them to stable.
Michael Narehood
If you play on a living-room PC, a Steam Machine-style box, a docked Steam Deck, or any screen where Steam’s Big Picture Mode feels more like a console than a desktop window, Valve’s September 9, 2026 Steam Client Beta is worth a look. The headline extras are Big Art Mode on the home screen, a Personal Calendar on the Recommended tab, and a proper screensaver for Big Picture.
Important channel note up front: Valve published this as a Steam Client Beta update. Secondary coverage such as PC Guide and Phoronix likewise frames the September 9 drop as beta. Do not assume your default stable Steam install already has Big Art Mode until your client channel says so.
Primary reference: Valve’s Steam Client Beta - September 9th announcement.
What the September 9 beta adds (Big Picture angle)
From Valve’s beta notes and consistent secondary summaries:
Homescreen / Big Picture Mode
- Big Art Mode for the home screen. Enable it in Settings → Home. It gives game artwork a larger presence while you browse, which is the couch-friendly change most people will notice.
- Personal Calendar on the Recommended tab of the home screen.
Screensaver / Big Picture Mode
- New screensaver feature under Settings → Customization
- Default option: slideshow using artwork from recently played games and recent in-game screenshots
- Alternate: a retro bouncing Steam logo style screensaver
- Custom screensavers can be loaded from a screensavers folder under your Steam install (similar idea to custom startup movies). Valve points at the bouncing logo example under the Steam UI screensavers directory as a starting point.
Other Big Picture polish
- Explicit warning text on power-menu confirmations when continuing would shut down an active game
- Updated default artwork when a game lacks library or hero art
- Reorganized idle timer settings for battery vs AC power
Broader client notes (still beta)
- Improved Steam Client startup performance
- Steam Input CPU performance improvements
- Linux download improvements on high-latency links, plus clearer SteamOS/Proton compatibility dialogs in desktop Linux UI
- Assorted overlay, recording, and reconnect fixes
Those extras matter on a Deck or living-room box, but Big Art Mode and the screensaver are the living-room features to try first.
Beta vs stable: how to think about it at home
| Channel | What you get today | Risk |
|---|---|---|
| Steam Client Beta (Sep 9 notes) | Big Art Mode, calendar on Recommended, Big Picture screensaver, related fixes | Earlier features, occasional beta bugs |
| Default / stable Steam | Whatever Valve has already promoted; may not include Sep 9 beta features yet | Fewer surprises, later feature arrival |
Stay on stable if Steam is the family shared box and you hate troubleshooting client oddities before a game night.
Opt into beta if you own the machine, want the TV/Deck UI upgrades now, and can switch back if something breaks.
Valve often moves beta client work to the default channel later. This article is coverage of the September 9 beta announcement, not a claim that every Steam install worldwide already has Big Art Mode on stable.
How to try it (home PC, Deck, or TV)
- Open Steam → Settings → Interface (wording can vary slightly) and find the client beta participation / update channel control.
- Select the Steam Beta Update (or equivalent beta channel), accept the download, and fully restart Steam.
- Enter Big Picture Mode (or use Gaming Mode on Deck).
- Enable Big Art Mode under Settings → Home.
- Optionally enable a screensaver under Settings → Customization and pick the art slideshow or bouncing logo style.
- Play a familiar game once. Confirm overlays, controllers, and shutdown prompts still behave.
- If the beta misbehaves, switch the update channel back to the default/non-beta option and restart Steam.
On Steam Deck, Steam Deck HQ and similar Deck-focused writeups describe the same Big Art Mode toggle after selecting Beta or Preview update channels. Treat Deck update channel names carefully; pick the channel that matches Valve’s beta client you intend to run.
Who this helps
- Docked Deck or living-room PC users who stare at the home row of games every night
- People building a Steam Machine-style appliance where Big Picture is the main UI
- Collectors who want screensaver art when the TV is idle
Skip the beta if you only launch Steam to click Play once a week on a desk monitor. The desktop library already works; Big Art Mode is a presentation upgrade, not a new game catalog.
Bottom line
Valve’s September 9, 2026 Steam Client Beta adds Big Art Mode (Settings → Home), a Recommended-tab Personal Calendar, and Big Picture screensavers (Settings → Customization), plus quality fixes aimed at TV, Deck, and living-room use. These notes are beta-channel features until Valve promotes them. Opt in if you want the couch UI now; stay on stable if you want fewer moving parts.
Image: generated living-room gaming environment hero (no Steam/Valve branding).
